750 ILCS 5/606.10: Designation of custodian for purposes of other statutes.

Solely for the purposes of all State and federal statutes that require a designation or determination of custody or a custodian, a parenting plan shall designate the parent who is allocated the majority of parenting time. This designation shall not affect parents' rights and responsibilities under the parenting plan. For purposes of Section 10-20.12b of the School Code only, the parent with the majority of parenting time is considered to have legal custody.